Another important point in how to use etc. in a sentence is punctuation. Because it is an abbreviation, you must place a period at the end of it. in front of the teacher, my classmates, parents, et al. (3) Some native speakers do , indeed, use "etc." for people, but I would advise against it.
Et cetera is a Latin phrase. Et means “and.” Cetera means “the rest.” The abbreviation of et cetera is etc. Use etc. when you begin a list that you will not complete;. Et cetera abbreviated to etc., etc, &c., or &c, is a Latin expression that is used in English to mean "and other similar things", or "and so forth". Translated literally.
Use etc. when you begin a list that you will not complete; it indicates that there are other items in the the need to continue with more actions of the same class —when he lies or bends down, for example. How to Use Et Cetera in a Sentence. Another important point in how to use etc. in a sentence is punctuation. In the 4th example, note also that there was a dash before the list.
If you use “etc.” in the middle of a sentence, and it is not enclosed in parentheses, then you must use a comma after the abbreviation. If it is in. For more information about proper usage of period after 'etc' you can When using parentheses and either a comma or other punctuation at.
What does “etc.” mean, and how should you use this common abbreviation? Usage note: Don't use a comma after etc. if it is at the end of the sentence. Is it correct to use comma after etc., at the end of the sentence in American style of English? What if it is a research paper in scientific writing?.
As @Deadrat and Hotlicks mentioned in the comment, in Latin, "et" is a conjunction which means "and" and "cetera" is an adverb which means. If there's no conjunction at the end of the list (and / or for example), then a comma is required. Thus, the correct version is: red, green, blue, etc.